/**
 *  Copyright 2011 Ryszard Wiśniewski <brut.alll@gmail.com>
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package brut.androlib.res.data.value;

import brut.androlib.AndrolibException;
import brut.androlib.res.data.ResResource;
import brut.util.Duo;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import org.xmlpull.v1.XmlSerializer;

/**
 * @author Ryszard Wiśniewski <brut.alll@gmail.com>
 */
public class ResEnumAttr extends ResAttr {
	ResEnumAttr(ResReferenceValue parent, int type, Integer min, Integer max,
			Boolean l10n, Duo<ResReferenceValue, ResIntValue>[] items) {
		super(parent, type, min, max, l10n);
		mItems = items;
	}

	@Override
	public String convertToResXmlFormat(ResScalarValue value)
			throws AndrolibException {
		if (value instanceof ResIntValue) {
			String ret = decodeValue(((ResIntValue) value).getValue());
			if (ret != null) {
				return ret;
			}
		}
		return super.convertToResXmlFormat(value);
	}

	@Override
	protected void serializeBody(XmlSerializer serializer, ResResource res)
			throws AndrolibException, IOException {
		for (Duo<ResReferenceValue, ResIntValue> duo : mItems) {
			int intVal = duo.m2.getValue();

			serializer.startTag(null, "enum");
			serializer.attribute(null, "name", duo.m1.getReferent().getName());
			serializer.attribute(null, "value", String.valueOf(intVal));
			serializer.endTag(null, "enum");
		}
	}

	private String decodeValue(int value) throws AndrolibException {
		String value2 = mItemsCache.get(value);
		if (value2 == null) {
			ResReferenceValue ref = null;
			for (Duo<ResReferenceValue, ResIntValue> duo : mItems) {
				if (duo.m2.getValue() == value) {
					ref = duo.m1;
					break;
				}
			}
			if (ref != null) {
				value2 = ref.getReferent().getName();
				mItemsCache.put(value, value2);
			}
		}
		return value2;
	}

	private final Duo<ResReferenceValue, ResIntValue>[] mItems;
	private final Map<Integer, String> mItemsCache = new HashMap<Integer, String>();
}
